In architecture, the term 'Gothic' refers to a style that dominated European church building from the twelfth to the sixteenth-century. It is characterised by a general emphasis on vertical forms and common design features include: pointed arches, elaborate tracery, steeply-pitched roofs, rib vaulted ceilings and leaded stained glass windows. The style regained popularity during the nineteenth-century, particularly in ecclesiastical building. Victorian Gothic architecture is usually referred to as 'Neo-Gothic' or 'Gothic Revival'.